Left 4 Dead 2 Discussion
I'm not sure what you are asking but L4D2 is only available through steam...
Even the store purchased versions has to have steam to run unless you've been playing the 360 version and now wanting to play on PC. Which still don't make much sense of what you're asking...
And to sum it up. IT WORKS.
* Updated game trainers and cheats daily
* Get notified when new cheats are added
* Request which games get new trainers
* Priority support with any problem